[PATCH 6/7] midx: read `OIDL` chunk with `pair_chunk_expect()`

[Taylor Blau <me@ttaylorr.com>]

The `OIDL` chunk can benefit from the new chunk-format API function
described in the previous commit. Convert it to `pair_chunk_expect()`
accordingly.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
---
 midx.c                      | 16 ++--------------
 t/t5319-multi-pack-index.sh |  1 -
 2 files changed, 2 insertions(+), 15 deletions(-)

diff --git a/midx.c b/midx.c
index 1d14661dad..66f34ed1a3 100644
--- a/midx.c
+++ b/midx.c
@@ -86,19 +86,6 @@ static int midx_read_oid_fanout(const unsigned char *chunk_start,
 	return 0;
 }
 
-static int midx_read_oid_lookup(const unsigned char *chunk_start,
-				size_t chunk_size, void *data)
-{
-	struct multi_pack_index *m = data;
-	m->chunk_oid_lookup = chunk_start;
-
-	if (chunk_size != st_mult(m->hash_len, m->num_objects)) {
-		error(_("multi-pack-index OID lookup chunk is the wrong size"));
-		return 1;
-	}
-	return 0;
-}
-
 static int midx_read_object_offsets(const unsigned char *chunk_start,
 				    size_t chunk_size, void *data)
 {
@@ -186,7 +173,8 @@ struct multi_pack_index *load_multi_pack_index(const char *object_dir, int local
 		die(_("multi-pack-index required pack-name chunk missing or corrupted"));
 	if (read_chunk(cf, MIDX_CHUNKID_OIDFANOUT, midx_read_oid_fanout, m))
 		die(_("multi-pack-index required OID fanout chunk missing or corrupted"));
-	if (read_chunk(cf, MIDX_CHUNKID_OIDLOOKUP, midx_read_oid_lookup, m))
+	if (pair_chunk_expect(cf, MIDX_CHUNKID_OIDLOOKUP, &m->chunk_oid_lookup,
+			      m->hash_len, m->num_objects))
 		die(_("multi-pack-index required OID lookup chunk missing or corrupted"));
 	if (read_chunk(cf, MIDX_CHUNKID_OBJECTOFFSETS, midx_read_object_offsets, m))
 		die(_("multi-pack-index required object offsets chunk missing or corrupted"));
diff --git a/t/t5319-multi-pack-index.sh b/t/t5319-multi-pack-index.sh
index 313496c0cf..2d68616c59 100755
--- a/t/t5319-multi-pack-index.sh
+++ b/t/t5319-multi-pack-index.sh
@@ -1077,7 +1077,6 @@ test_expect_success 'reader notices too-small oid lookup chunk' '
 	corrupt_chunk OIDL clear 00000000 &&
 	test_must_fail git log 2>err &&
 	cat >expect <<-\EOF &&
-	error: multi-pack-index OID lookup chunk is the wrong size
 	fatal: multi-pack-index required OID lookup chunk missing or corrupted
 	EOF
 	test_cmp expect err
-- 
2.43.0.rc0.39.g44bd344727